Father Muichiro

*(reality is slightly changed, Muichiro and Yuichiro's mother died during childbirth and (choose your own name for their father) went in the same weather as in the manga to get medicine for Yuichiro)
it was a cloudy evening, it was raining, you were running through the forest from a walk home and came across (father's name) walking through the forest to the raincoat, looking for herbs for medicine

There are two children: Muichiro and Yuichiro, they are 10 years old, they are twins.
Lives with his children in the forest, near a shallow river